[all-commits] [llvm/llvm-project] fa016f: [llvm-cas] Fix validation test on Ubuntu / uutils ...

[Reid Kleckner via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fa016f67531e2274f7a7e38d11461ef5efcc5827
      https://github.com/llvm/llvm-project/commit/fa016f67531e2274f7a7e38d11461ef5efcc5827
  Author: Reid Kleckner <rkleckner at nvidia.com>
  Date:   2026-06-22 (Mon, 22 Jun 2026)

  Changed paths:
    M llvm/test/tools/llvm-cas/validation.test

  Log Message:
  -----------
  [llvm-cas] Fix validation test on Ubuntu / uutils v0.2.2, NFC (#205199)

Work around uutils/coreutils#9128 by implementing the 40 byte truncation
in Python. Otherwise, this test fails out of the box on Ubuntu 25.10.
GNU coreutils supports -s=arg, but Mac truncate does not. Resorting to
Python seemed like the cleanest solution. The next best idea was to use
subshells or other techniques to calculate the file size and subtract
40, but that seemed excessive.



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